Tube or bag and method of making the same



Patented Feb. 17, 1925.

PATENT OFFICE.

HOWARD e. wrom, or BROOKLYN, NEW onm'ns'sienoa To naKELL SAFETY BAG COMPANY, OFiNEw YORK, N. Y.,

A `CORPORATION OENEW YORK.

TUBE OR BAG AND METHOD OF MAKING THE Application led July. 12, 1920. Serial No. 395,654.

To all whom t may concern.' A

Be it known that I, HOWARD G. WIDMER, a citizen of the United States, and a iesident of the borough of Brooklyn, county of Kings, and State of. New York, have invented certain new and useful Improvements in Tubes or Bags and Methods of Making the Same, of which the following is a. specili- Y be stretchable over its entire surface.

To attain this object, I have devised a bag which -is provided nearthe top with a free pleat. I have also improved the mode of manufacture of these bags so that the seam which. ordinarily has heretofore been at one edge lof the bag, is now placed along, or near, the middle of one of the sides of the bag.

The edge seam in the paper bag has been objectionable as the greatest strain on the paper bag came at this point when t-he textile bag was lifted by the usual ears. This is especially true when the paper vbag is provided with a sewed seam. A

Another object of the invention is to improve the fastening of the mouths of the paper and textile bags whereby the usual ears are done away with. The bag will then be l of the pleut. the former Aan substantially symmetrical end for. end.

Other Objects of the inventionv will appear as the description proceeds.

In the drawings,y I have shown one form of paper bag, a method of making the same, and the mode of assembly of the paper and textile bags.

It is desired that these drawings shall be considered as illustrative of the invention that theoperator should grasp the tube in rather than limiting the same. 4

In the drawings, Fig.- 1 illustrates a tubular article made of crinkled paper and having alseam along one e thereof.

. Fig. 2 illustrates'a fixed cylindrical formerover which the tubel shown in Fig. 1 is adaptedtc be drawn.

Fig. 3 illustrates the tube inv such position, with a movable die adjacent. f l

Fig. 4 illustrates the com lote formation die being yet in place.

Fig. 5 illustrates a bag after it` has 'been removed from the pleating devices and after the bottom has been sewed and folded.

Fig. 6 is a section on the line 6-6 of Fig. 5 showing the empty bao` with the free pleat.

Fig. 7 illustrates a filled paper ba within a textile bag and shows the mode o fastening or closing the mouths of the bags.

Fig. 8 is a section on the line 8-8 illustrating the disposition ofthe seams in the paper and textile bags respectively.

The paper tube 10, whichhas been made from a sheet by folding the sheet centrally, shown in Fig. 1, has, along one edge, a seam 11, which may be either sewed or pasted. The tube, or bag, is here to be considered as empty and fiat In order to provide the tube, or bag, with a pleat near an open end, the tube, or bag, may be drawnv over a suit-able form which is shown in Fig. 2 as cylindrical.` The form is tubular and has cylindrical portions 12 and 13 of different diameters. The cylindrical portion' 13 extends inside the portion 12 for a short distance to provide an annular recess 14. When the paper tube or bag has been drawn over the form, the free end of the bag will assume substantially the position shown at 15 in Fig. 3, i. e., itwill contract. A cylindrical die '16 is passed. down over the conracted part of the paper tube. The die 16` is of proper diameter so that it will pass outside the cylindrical portion 13 and into the recess 14. Whenthe die passes into this recess, it carries the paper tube along with it, whereupon the parts assume the position shown in Fig. 4, the tube being pleated at 17,the folds being at 1'(ai and 1'7". The-die may then be removed. l

When the tube is in the form shown in Fig. 1, the seam is at the edge. In order that the seam may now come in the middle of one side of the back, it' is only neceary the proper position when the tube is drawn olf the former. The tube will now be`as shown in the upper art of Fig. 5, in which the seam is at one si e of the collapsed tube instead of at-.One edge.

It is to beunderstood that the above is only one of the many appliances which may be employed to pleat the ag in this fashion. The o rator may use his fingers instead of the ey drical die 16. n

To make a bag, the tube is then sewed vNi ion Y.

los

or pasted at the bottom at 18 and may or may not'be folded over, as desired. It is preferred, however, that it should be folded over as this will reinforce the bottom seam and permit the bag to yield in service. The folded-in edge of the `paper is indicated at 18a.

The completed paper bag is shown in Fig. 5. This bag is intended for use within an outer textile bag. It is inserted by hand into this textile'bag and lled in the usual manner. After the bag is filled, it may be closed, either in the usual` fashion by rolling down and vsewing together the mouths of the bags, leaving the usual ears fo-r handling the same-but I prefer to pass the filled bag through a sewing machine which will securely sew the textile and paper bags togetheras shown in Fig. 7 at 19. The position takenL by the folds 17a' and 17b of the pleat 17 will then assume some such position as shown. f It is clear that when the filled bag is grasped at the upper edge thereof, the pleat 17 will spread, permitting longitudinal stretchability of the paper bag relative to the textile bag. Heretofore, the weakest part of the combined paper textile bags has been at the top, as the crinkled paper from which the paper bag is made does not provide longitudinal stretchability. It was also customary to have the side seam 1l adjacent the sea-m of the textile bag.`

When, however, the improved bag shown in Fig. 5 is used in Va textile bag, the seam 1l of the-outer bag comesalong the middle of one side of the textile bag, as shown in Fig. 8. In this zone, the load placed upon the seam 11 is very much less than the load which would be placed upon it were it on the side of the bag, as heretofore.

While I have shown my invention in what I believe to be the most efficient and desirable form, it will beunderstood that various changes may be made without departing from the scope of the invention.

1. An article made of crinkled paper havin a free pleat near an open end thereof whereby longitudinal extensibility is permitted.

2. A bag made of crinkled paper having a free fold at the bottom and having a free gleat near the top thereof whereby longituinal extensibility is permitted. f

3. An article made of a 'single sheet of crinkled paper by seaming two opposite margins to form a tube, and closing one end of t e tube to form a bag, said bag having said seam along a middle portion of one side thereof, and being further pro-vided with a free transverse pleat, remote from the end thereof.

4. An article made of a single sheet of crinkled paper by seaming two opposite margins to form a tube, and closing one end of the tube to form a bag, said bag having said seam along a middle portion of one side thereof, and being further p-rovi-ded with a free transverse pleat near the open end thereof and also with 'a free fold at the closed end thereof. Y

5. An article made of a single sheet of crinkled paper by seaming two opposite margins to form a tube, and closing one end of the tube to form a bag, said bag having said seam Ialong a middle portion of one side thereof, and being further provided at the closed end thereof with a free fold.

6. A circumferentially stretcha-ble crinkled paper larticle of the class described, provided with means to permit longitudinal extensibility near an open end thereof, said Imeans comprising a free ple'at.

7. Al circumferentially stretchable crinltled paper article of the class described, provided with means to permit longitudinal extensibility near an open end thereof, said means comprising a free side-pleat.

8. A circumferentially stretchable crinkled paper bag provided with means to permit longitudinal extensibility near yan open end thereof, said bag also having a free fold at the closed end thereof, and a longitudinally seamed portion, which seamed portion is also longitudinally extensible.

9. The combination with an outer textile bag having a side seam along one edge thereof, of an inner crinkled paper bag `whose crinkles are longitudinal, said bag being provided with means to permit longitudinal stretchability independent of the textile bag near the top thereof.

10. The combination with an outer text-ile bag having a side seam along one edge thereof, of an inner crinkled paper bag whose crinkles are longitudinal, said bag being provided with means to permit longitudinal stretchability independent of the textile bag near the top thereof, said paper bag being further provided with a longitudinal Seam disposed medially in one of the sides of the bag, when flat, whereby, when the bag is filled, the seam is subjected to a minimum stress.

1l. A combined inner paper and outer textile bag wherein themouths of said bags are sewed together, and the paper bag is pro'- vided with means to permit circumferential extensibility, and with means topermit longitudinal extensibility.

This specification signed this 9th day of July, A. D., 1920.l I

HOWARD G. WIDMER. 

